What two particles account for almost all of the mass of an atom?

Write electron configurations for the elements that are identified by these atomic numbers a. 15 b. 12 c. 9 d. 18

What is the mass of the most abundant isotope? A. mass number is the mass of the most abundant isotope B. mass number is the mass of the protons in the nucleus C. mass number is the number of protons in the nucleus D.

Non-example of applied force

It is the difference in the r group that makes each amino acid chemically unique. it is the difference in the r group that makes each amino acid chemically unique. a. True b. False

What is the general term used to describe animals from Platyhelminthes?

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Wat is a redox reaction

What is the difference between an organic and inorganic molecule